<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
	#a1{
		width:740px;
		height:200px;
		background-color:#FCC;
		float:left;
		margin:10px;
	}
	#a2{
		width:200px;
		height:500px;
		background-color:#C96;
		float:left;
		margin:10px;
	}
	#a3{
		width:200px;
		height:500px;
		background-color:#FF3;
		float:left;
		margin:10px;
		
	}
	#a4{
		width:300px;
		height:500px;
		background-color:#6CC;
		float:left;
		margin:10px;
		
	}
	#a5{
		width:740px;
		height:200px;
		background-color:#F30;
		float:left;
		margin:10px;
	}
	#father{
		width:760px;
		height:960px;
		border:double 10px #CCFF99;
		margin:auto;
	}
</style>
</head>

<body>
<div id="father">
<div id="a1"></div>
<div id="a2"></div>
<div id="a3"></div>
<div id="a4"></div>
<div id="a5"></div>
</div>
</dbody>
</html>
